【摘要】 <正> 四川西部峨眉、甘洛等地是我国研究寒武系与震旦系界线重要地区之一。近年来在该区震旦系上统上部至寒武系下统最低三叶虫化石层位以下,发现了各种不同类型的遗迹化石。它们从寒武系底部向上,逐渐丰富多样,并与小壳动物化石同时存在,为地层的划分、对比和沉积相的分更多还原

【Abstract】 One of the important regions for studying the Cambro-Sinian boundary lies in the Emei and Ganluo region, W. Sichuan China. There between the lowest Cambrian trilobite—bearing horizon and the top part of the Upper Sinian occur numerous forms of trace fossils. These become even more abundant and associated with plentiful small shelly fossils of many phyla above the base of the Cambrian.Topics covered herein include the stratigraphical distribution and the ecological classification of trace fossils, the role they play in fixing the Cambro-Sinian boundary and their relstion with small shelly fossils. These are followed by a systematic description of 7 genera and 8 species. Among the genera 3 (Monomorphichnus, Planolites, Scolicia) are already known and 4 (Lachr ymatichnus, Microspirolithus, Multilaqueichnus, Parascalaritubus)are new. All the species except one are new.更多还原